Adjustable paddle casting device

Abstract

The invention discloses an adjustable paddle casting device which comprises a pouring device, a paddle die, a pouring table, a first riser and a second riser, the second riser is arranged on the pouring table and provided with a first discharging port and a second discharging port, the first riser is arranged above the second riser and communicates with the first discharging port, and the paddle die is arranged on one side of the second riser and communicates with the second discharging port. The pouring table is provided with a slag collecting nest, the slag collecting nest is communicated with the riser II, and the pouring device is used for injecting pouring liquid into the riser II and filling the paddle mold. Through the design, a feeding neck, a chilling block and chilling sand are omitted, risers are reduced, workers can operate more easily in the molding process, the quality is improved, post-treatment processes are reduced, the labor cost is reduced, and the process yield is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of oar manufacturing equipment, in particular to an adjustable oar casting device. Background Art

[0002] The existing adjustable-pitch casting device needs to compensate for the shrinkage before casting. During the adjustable-pitch casting process, auxiliary means such as compensation for the shrinkage, chilled iron and chilled sand are needed to ensure the quality and integrity of the casting.

[0003] However, there are still some problems with the use of supplementary necking. Improper design of supplementary necking may lead to casting cracks, segregation and inclusion defects, affecting the overall quality of the product.

[0004] Yield rate: Due to the existence of the shrinkage neck, the dimensional shrinkage of the casting may become unstable, resulting in an increase in the number of scrapped products and a decrease in the yield rate.

[0005] Cost: The complex necking design and processing process increase the tooling cost, and a large number of manual operations also increase the labor cost.

[0006] The adjustable propeller cast by traditional technology has problems such as slag inclusion and serious pinholes in the blades and flanges, resulting in large processing allowances, large-area welding repairs, and serious deformation. Summary of the invention

[0007] In order to solve the above technical problems, the present invention provides an adjustable-paddle casting device.

[0008] The invention provides an adjustable-paddle casting device that adopts the following technical solution:

[0009] An adjustable paddle casting device comprises a casting device, a blade mold, a casting platform, a first riser and a second riser, wherein the second riser is arranged on the casting platform, the second riser has a first discharge port and a second discharge port, the first riser is arranged above the second riser and communicates with the first discharge port, the blade mold is arranged on one side of the second riser and communicates with the second discharge port, the casting platform has a slag collection nest, the slag collection nest communicates with the second riser, and the casting device is used to inject casting liquid into the second riser and fill the blade mold.

[0010] Optionally, the blade mold is provided with a riser three communicating with the interior of the blade mold, the riser three has an exhaust port, and the exhaust port is provided with an exhaust pipe.

[0011] Optionally, the angle between the pitch of the blade mold and the horizontal plane ranges from 15° to 35°.

[0012] Optionally, the leading edge of the blade mold is slightly higher than the trailing edge of the blade mold.

[0013] Optionally, a pouring pipe is provided on the pouring platform, and the pouring device is injected into the second riser through the pouring pipe.

[0014] Optionally, a plurality of casting pipes are arranged at intervals along the circumference of the riser 2, a casting ring is arranged in the casting platform, a plurality of casting pipes are arranged on the casting ring, and the casting ring has an inlet, which is in communication with the casting device.

[0015] Optionally, the casting device includes a transverse runway and a straight runner, the straight runner is used to flow the casting liquid into the transverse runway, and the transverse runway is in circulation with the casting ring.

[0016] Optionally, a filtering device is provided between the horizontal runway and the vertical runner.

[0017] Optionally, the filtering device is overlapped at the connection between the horizontal runway and the vertical runner.

[0018] Optionally, a shrinkage-feeding channel is provided between the second riser and the third riser.

[0019] In summary, the present invention includes at least one of the following beneficial technical effects: through the above design, the neck filling, cold iron and quenching sand are eliminated, the riser is reduced, the workers are easier to operate in the molding process, the quality is improved, the post-processing steps are reduced, the labor cost is reduced, and the process output rate is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 is a partial cross-sectional view of an embodiment of the present invention;

[0022] Figure 2 It is a partial structural diagram of an embodiment of the present invention.

[0023] Explanation of the reference numerals in the accompanying drawings: 1. blade mold; 2. casting table; 3. riser one; 4. riser two; 5. riser three; 6. exhaust pipe; 7. casting pipe; 8. slag collection nest; 9. horizontal runway; 10. vertical runner; 11. filtering device; 12. shrinkage feeding channel. DETAILED DESCRIPTION

[0024] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0025] The following is combined with Figure 1-2 The present invention is described in further detail.

[0026] The embodiment of the invention discloses an adjustable-paddle casting device.

[0027] Reference Figure 1 , Figure 2 , an adjustable paddle casting device, including a casting device, a blade mold 1, a casting platform 2, a riser 1 3 and a riser 2 4, the blade mold 1 is provided with a riser 3 5 which is in communication with the inside of the blade mold 1, the riser 2 4 is arranged on the casting platform 2, the riser 2 4 has a discharge port 1 and a discharge port 2, the riser 1 3 is arranged above the riser 2 4 and is in communication with the discharge port 1, the blade mold 1 is arranged on one side of the riser 2 4 and is in communication with the discharge port 2, the casting platform 2 has a slag collection nest 8, the slag collection nest 8 is in communication with the riser 2 4, and the casting device is used to inject casting liquid into the riser 2 4 and fill the blade mold 1. Through the above design, the necking, cold iron and chilled sand are eliminated, the riser is reduced, the workers are easier to operate in the molding process, the quality is improved, the post-processing process is reduced, the labor cost is reduced, and the process yield is greatly improved.

[0028] In this embodiment, the casting table 2 serves as a basis for supporting the blade mold 1, riser 1 3, riser 2 4 and riser 3 5. Riser 2 4 is installed on the casting table 2. A slag collecting nest 8 is formed in a groove in the center of the casting table 2, so that the residues remaining in riser 1 3, riser 2 4, the blade mold 1 and riser 3 5 flow into and settle in the slag collecting nest 8 under the action of gravity, so that the purity of the blade mold 1 is high, the quality is improved, the post-processing steps are reduced, the labor cost is reduced, and the process yield is greatly improved.

[0029] A slag collection nest 8 is provided in the casting device to collect and precipitate slag, thereby improving the quality of the casting, reducing defects and scrap rate, and reducing production costs.

[0030] In this embodiment, a blade mold 1 is provided on the side wall of the second riser 4. The blade mold 1 is used to cast the adjustable slurry. When the inside of the blade mold 1 is filled with casting liquid and completely cooled, the adjustable slurry is formed.

[0031] In this embodiment, a plurality of blade molds 1 can be arranged along the circumference of the second riser 4, which improves the casting efficiency of the blade mold 1, and a plurality of adjustable slurries can be cast at one time, which greatly improves the work efficiency. Specifically, two blade molds 1 are arranged along the circumference of the second riser 4, and the two blade molds 1 are arranged on both sides of the second riser 4 relatively.

[0032] In this embodiment, the riser 3 5 has an exhaust port, and the exhaust port is provided with an exhaust pipe 6. The casting liquid enters the blade mold 1 through the riser 2 4, and then enters the blade mold 1. The excess casting liquid enters the riser 3 5. The exhaust pipe 6 is used to discharge the excess air in the entire casting process through the exhaust pipe 6. Timely exhaust of gas through the exhaust pipe 6 can effectively reduce defects such as pores and slag inclusions inside the casting, improve the qualified rate and overall quality of the casting, and the exhaust pipe 6 can also help control the solidification process of the casting, reduce shrinkage cavities, shrinkage and other problems caused by gas retention, so that the casting liquid can fill the mold cavity more smoothly, and improve the casting efficiency. At the same time, the exhaust pipe 6 can also help adjust the pressure distribution in the blade mold 1, so that the casting is subjected to more uniform pressure during the solidification process, thereby obtaining better organizational structure and mechanical properties.

[0033] A pouring pipe 7 is provided on the pouring platform 2, and the pouring device is injected into the riser 2 4 through the pouring pipe 7. Specifically, a plurality of pouring pipes 7 are provided at intervals along the circumference of the riser 2 4, and a pouring ring is provided in the pouring platform 2. A plurality of pouring pipes 7 are provided on the pouring ring. The pouring ring has an inlet, and the inlet is in communication with the pouring device. Since the pouring liquid is poured from bottom to top through the pouring pipe 7, pouring from bottom to top helps to push the air and gas in the mold cavity to move upward and be discharged through the exhaust pipe 6 provided on the top of the mold. This pouring method helps to reduce the retention of gas in the casting, thereby reducing the risk of defects such as pores and slag inclusions. Pouring from bottom to top allows the pouring liquid to fill the mold cavity more smoothly, especially in molds with complex shapes. This flow method helps to reduce the eddy current and turbulence of the pouring liquid, thereby reducing the possibility of defects such as shrinkage cavities and shrinkage porosity inside the casting.

[0034] Multiple pouring tubes 7 are distributed along the circumference to form multi-point pouring, which can ensure that the pouring liquid fills the mold cavity more evenly. This uniform filling helps to reduce defects caused by uneven flow of the pouring liquid, such as eddy currents, turbulence and cold shuts. Multi-point pouring helps to push the air and gas in the mold cavity to move to the top and edge of the mold, and discharge through the exhaust pipe 6 set at an appropriate position, which helps to reduce the retention of gas in the casting, thereby reducing the risk of defects such as pores and slag inclusions.

[0035] The pouring device comprises a horizontal runway 9 and a sprue 10. The sprue 10 is used to flow the pouring liquid into the horizontal runway 9. The horizontal runway 9 is in circulation with the pouring ring.

[0036] The sprue 10 is the starting section of the pouring device. Its main function is to guide the pouring liquid (such as molten copper) from an external source and flow it into the horizontal runway 9, so that the liquid can be quickly and smoothly transported during the pouring process, facilitating the inflow of the liquid. The horizontal runway 9 is a key channel in the pouring device, which is responsible for further guiding the pouring liquid flowing into the sprue 10 to the pouring ring. The horizontal runway 9 plays an important connecting role between the sprue 10 and the mold cavity. They work together to ensure that the pouring liquid can smoothly and evenly fill the mold cavity, thereby producing high-quality castings.

[0037] A filter device 11 is provided between the horizontal runway 9 and the straight runner 10. To filter impurities, the main function of the filter device 11 is to capture and remove impurities in the casting liquid, such as metal oxides, non-metallic inclusions, bubbles, etc. Preventing impurities from entering the mold cavity may cause defects in the casting, such as pores, slag inclusions, cracks, etc. By filtering out impurities, the filter device 11 can improve the fluidity of the casting liquid, allowing it to fill the mold cavity more smoothly, and help reduce casting defects caused by poor flow. The use of the filter device 11 can significantly improve the quality of castings, reduce defects caused by impurities, and improve the mechanical properties and appearance quality of castings. In the present embodiment, the filter device 11 includes a filter net, and the filter device 11 adopts a filter element of the prior art.

[0038] The angle between the pitch of the blade mold 1 and the horizontal plane is in the range of 15°-35°. When the adjustable propeller is rotated in the original pitch state, the angle between the original pitch of the adjustable propeller and the horizontal plane is in the range of 35-55°. Due to the high inclination, on the one hand, it is not conducive to the installation of the blade mold 1, and the installation requirements and fixation requirements are high. Secondly, the requirements for the shrinkage neck are high, otherwise the process yield will be greatly reduced. On the other hand, casting is difficult due to the high inclination. The high inclination may cause eddy currents or turbulence in the molten metal during the flow, thereby affecting the shrinkage effect and increasing the risk of defects in the casting. Due to the high inclination, the pouring liquid may encounter greater resistance during the flow, resulting in poor flow or splashing. This will not only affect the accuracy and uniformity of the pouring, but may also pose a threat to the safety of the operator.

[0039] Adopting the above-mentioned angle range is conducive to the installation and fixation of the blade mold 1. The blade mold 1 can be more easily docked with the production equipment, thereby reducing the shrinkage neck. At the same time, the fixation is more stable, ensuring that the mold remains stable during the casting process.

[0040] In this embodiment, the leading edge refers to the leading edge of the blade, that is, the portion of the blade that first contacts the fluid when rotating. The trailing edge is the trailing edge of the blade, that is, the portion where the fluid leaves the blade. The leading edge of the blade mold 1 is slightly higher than the trailing edge of the blade mold 1, which can improve the propulsion performance and casting quality, make it more convenient for subsequent manual removal of the blade mold 1, reduce post-processing procedures, reduce labor costs, and greatly improve the process yield.

[0041] A shrinkage-feeding channel 12 is provided between the riser 2 4 and the riser 3 5. The shrinkage-feeding channel 12 is used to connect the riser and the part of the casting that needs shrinkage-feeding, to ensure that the casting liquid can effectively feed the shrinkage, to avoid shrinkage cavities and shrinkage looseness, to help ensure that the casting structure is dense, without shrinkage cavities and looseness, and to improve the casting quality. In this embodiment, the shrinkage-feeding channel 12 is provided above the riser 2 4 and at the connection with the riser 3 5, which is near the last solidified hot node, and the gravity of the casting liquid is used for shrinkage-feeding. The shrinkage-feeding channel 12 can ensure the casting quality and shrinkage-feeding effect.

[0042] In this embodiment, due to the adjustment of the pitch inclination angle of the blade mold 1, the shrinkage neck is eliminated, ensuring that the casting liquid can be effectively compensated during the solidification process to prevent defects such as shrinkage cavities and shrinkage porosity. Effective control of the cooling process of the casting is achieved, thereby eliminating the need to use chilled iron and chilled sand.

[0043] In this embodiment, the casting liquid is molten copper.

[0044] The present invention eliminates the need for conventional pouring systems to perform pouring, chilling iron and quenching sand, thereby simplifying the casting process and potentially improving production efficiency and casting quality.

[0045] The present invention simplifies the casting process, reduces tooling costs and labor costs, improves the output rate and quality stability of castings, reduces the scrap rate, and improves production efficiency.

[0046] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core ideas. The above is only a preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements, modifications or changes can be made, and the above technical features can be combined in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. An adjustable propeller casting device, characterized in that: The invention comprises a casting device, a blade mold, a casting platform, a riser 1 and a riser 2, wherein the riser 2 is arranged on the casting platform, the riser 2 has a discharge port 1 and a discharge port 2, the riser 1 is arranged above the riser 2 and communicates with the discharge port 1, the blade mold is arranged on one side of the riser 2 and communicates with the discharge port 2, the casting platform has a slag collection nest, the slag collection nest communicates with the riser 2, and the casting device is used for injecting casting liquid into the riser 2 and filling the blade mold.

2. The adjustable propeller casting device according to claim 1, characterized in that: The blade mold is provided with a riser three communicating with the interior of the blade mold, the riser three has an exhaust port, and the exhaust port is provided with an exhaust pipe.

3. The adjustable propeller casting device according to claim 2, characterized in that: The angle between the pitch of the blade mold and the horizontal plane ranges from 15° to 35°.

4. The adjustable-paddle casting device according to claim 3, characterized in that: The leading edge of the blade mold is slightly higher than the trailing edge of the blade mold.

5. The adjustable propeller casting device according to claim 1, characterized in that: The pouring platform is provided with a pouring pipe, and the pouring device is injected into the second riser through the pouring pipe.

6. The adjustable-paddle casting device according to claim 5, characterized in that: A plurality of casting pipes are arranged at intervals along the circumference of the riser 2. A casting ring is arranged in the casting platform. A plurality of casting pipes are arranged on the casting ring. The casting ring has an inlet, and the inlet is in communication with the casting device.

7. The adjustable-paddle casting device according to claim 6, characterized in that: The casting device comprises a transverse runway and a sprue, wherein the sprue is used to flow casting liquid into the transverse runway, and the transverse runway is in communication with the casting ring.

8. The adjustable-paddle casting device according to claim 7, characterized in that: A filtering device is arranged between the horizontal runway and the vertical runner.

9. The adjustable-paddle casting device according to claim 8, characterized in that: The filtering device is overlapped at the connection between the horizontal runway and the vertical runner.

10. The adjustable-paddle casting device according to claim 8, characterized in that: A shrinkage-feeding channel is arranged between the second riser and the third riser.

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